How to deploy custom workflow activity to on-premise CRM 2016

Hello,

I have developed a custom workflow activity and want to deploy it on my CRM server (on-premise CRM 2016).

I have tried to deploy it using Plugin registration tool and it got deployed successfully, but it is throwing error related to other dlls(SharePoint dll or OpenXML dll) as I am using the other dlls to work with the word document. So now my question is, how can I deploy all the dlls which got generated in debug folder.

Even if we try to deploy the custom workflow activity using Plugin registration tool, it only allows to select single assembly which is related to workflow activity.

So can anyone help me on how to deploy the custom workflow activity using Plugin registration tool?

Thanks in advance.